Apparatus for sinking wells



(No Model 7 sheet -shee 1 M. T. CHAPMAN.

APPARATUS FOR SINKING W V ELLS.

Patented May 15, 1888.

WA HA v (No Model.)

1 M. T. CH PMAN; A APPARATUS FOR SINKING WELLS 1w. 382,689. I PatentedMay15A1888 7 Sheets-Sheet 2.

(No Model.) 7 sheets sheet 3.

M. T. CHAPMAN. T V

v APPARATUS FOR SINKING WELLS. I Y I 5 'Patented May 15, 1888;

7 sneets -sheta (No Model.)

T. CHAPMAN. APPARATUS FOR SINKING WELLS.

No. 382,689. Patented May 15, 1888-.

W========EW uw'd M01581.) t I 7 Sheets-Sheti, M. T. CHAPMAN.

' APPARATUS FOR SINKING RV TELLS.

No. 382,689, .A Patented M21115, 1888..

11-; I 1?? M 1! "WW /Z All; I 1 5/ k/ 1% W H k i I minim": Jlml! Mnlmmlllllllllllhm1 NITED.

PATENT OFFICE MATTHEW 'r.- CHAPMAN. or AURORA, innmois.

APPARATUS FOR SiNKlNG WELLS- SPBCIPICATION Uniting part of Letter! PQtGnLNO. 383,699,5lt6d May 15, 1888 I Application.filedoeloher ao, 85. Serial Kc. 181,380. (h model.)

To all whom it may concern.-

Be it known that I, MATTHEW T. CHAPMAN, residing at Aurora, in the county of Kane and State of Illinois, and a. citizen of the United States, have invented a new and useful Inr provement in Apparatus for Sinking Wells, of which the following is 'a full description, reference being had to the accompanying drawings, in which-- IO Figure 1 is atop or plan view of the gripping and turning table and its actuating devices andthe loose winding-drum and its actu- -uting devices';' Fig. 2, a sectional elevation of the parts shown in Fig.1; Fig. 3, a detail in i5 perspective of the clamp for the support of the gripper; Fig. 4, a detail in perspective of the gripper and its, flame or support; Fig. 5, a, detail in perspective of the key for locking the gripping-cones; Fig. 6, an elevation in perspectiveof the loose winding --drut n and its actuating devices; Fig. 7, aperspective view of the revolving clutch-block; Fig. 8, a transverse section of the revolving clutch; Fig. 9, a cross section through the revolving clutch;

2 5 Fig. 10, an elevation of lhe driving-wheel for the drum; Fig. 11, asectionnl elevation of the driving-wheel of Fig. 10; Fig. 12, a. detail of the cushion around the bolts connectingthe hub of the wheel with the spokes; Fig. 13, a

3: perspective view of the apparatus; Fig. 14, an

elevation showing the devices for sinking the hole for the well; Fig. 15, a detail of a cutter applied to the lower end of the tube being sunk; Figs. 16 and 17, detailsof one form of drill to be used in sinking the hole.

' Thisinvention relates to machinery or mechanism primarily designed for use in sinking wells, and with that class of wells in which a hole is sunk and a tube carried d )Wll to form 40 the wall of the well, butivhic. can be usedfor other purposes, and has for its objects to give,

the tubing a. rotary motion without interfering with its progressive motion downward, by

which the tubing can be used for cutting itsown hole; to improve theconstrnction and operation of the mechanism by whichthe drillrod, when a drill is used, is controlled in rising and falling; to improve the devices which control a loose winding-drain in winding and so unwinding the rope or cable thereof, and to improve generally the construction and op- I eration of the mechanisms by which the tubing is handled and the hole sunk; snd its 'nature consists in the several parts and conrbinations of parts, hereinafter described, and pointed outin the claims, as new for attaining the objects sought. v

In the drawings, Areprescnts the side pieces of a. frame, A "A"'end pieces, and A A cros'sr pieces. The side pieces, A, are of sufficient 6d depth to furnish a space underneath the-floor actuating mechanism in the arrangement shown, and the end pieces and cross-pieces for the frame are to be located and arranged to furnish a connection for the side pieces and a support for the gripping mechanisms and its operating devices and other parts pertaining to the apparatus as :1. whole, and, as shown, a

covering or floor, A, is provided to rest on the 10 top of the side pieces over the gripping-table and under the loose winding-drum, the sec tionsot which flooring or covering can be hinged one to the other, so as to be capable of rising to permit access to the grippingtable' 7 and its actuating devices, and'such flooring or covering can be made up in sections, so as to be removable for this pnrpose,"-or, if desired, the cover, as a whole, can be omitted; and it is to be understood that the frame-work is, to so be made to furnish a support for the turningdevices and a loose winding-drum and its devices, and its form therefore can be changed or modified from that shown.

B is a. ring having on the ext'erior'face leaves 8 or cogs I) located beneath an upper outwards extending flange, a, into which leaves or cogs the leaves or cogs of gear-wheels B mesh,

which wheels are mounted on suitable studs or shafts extending up from an annular rim,'l3, 0 within the opening of which the'cogged ring B is located, and this rim B[, is bolted er otherwise firmly secured'to the end piece, A, and

crosspieee A,or to other suitable supports attached to the frame-work. Asshown, one of the wheels B" is located on the line of alongitudinal center of the frame, or nearly so, and the shaft b" of this-wheel extends down and has its hearings in the cross-piece A; the shaft passing through the ring B, and this wheel B" :00

in the arrangement shown is the drivingwheel for rotating the'cogged ring 13.

for the location of the gripping-table and its i inner edge of the part 0 support 0 O. G.

C O (3 represent a support, the portion 0 of which is curved and the portions 0 Ostraight and standing at right angles,or nearly so,to the portion 0, and at the inner end of each part 0 G", in the edge of the circular portion O,is a depression or recess,c. The part 0 has a hole. 0, for the passage ofa bolt, and .the end of O has a hole, 0', for the passage of a boltor pivot by which the support as a whole is pivotally attached to the ring B,and, asshowu, the part 0 has an enlarged portion, a, in which is a taperingslot, c, the taper running from the to the outer edge. Two supports 0 O O", exactly similar in construction, are provided,which lie adjacent to each other when the parts are together, the ends being reversed.

D is a plate having a rectangular opening, D, on its inner edge, on three sides of which is as depending flange, d, the end flanges of which support a shaft, D, on which, within the opening D, is mounted two cone-shaped pieces, D, circular in cross-section, each having its exterior face provided with a series of teeth or ledges. The outer end of the plate D has a slot slightly curved, through which and the opening a a bolt, d",passes,for attach ing the plate D to the support G O C, and when in place the ends of the' shaft' D lie within the depression or recess 0, while the flanges abutagai'nst thesqnare end of the openingin the snpportCCOand preventside turning or twisting of the plateD with the clutchcones D. Two of these plates D, each of a similar constructiomare provided,one fo'r each The free end 0 of each support is connected with the pivotal end of the other support by means of an adjusting-bolt, d, the head end of which is pivoted between ears d on the pivoted end 0' of the respective supports, the stem of the boltpassingthrongh the slot 0 and receiving on its end a nut, d, and, as shown, in order to secure a quick tightening and loosening of the supports a wedgeshaped staple, d, (shown in Fig; 5,) is forced down between the nut and the edge or end of the enlarged portion 0, by which a wedging action is produced to bring the supports closer to ether. The 'snpportsG C G" and plates D a e in fact two pivoted jaws carrying the gri pping-c0nes,betweenwhich cones the tubingis caughtnnd impinged, so as to be held snfiiciently firm for rotation and at the same time sufficiently free to be forced down ward, and these jaws can be adjusted as required to suit difl'erent-sized pipes by throwing the free endsapart to leave the required space within the cones for the passage of the tubin E is a beveled gear, keyed orolherwise fastened to the shaft b below the gear-wheel B, with which beveled wheel E a beveled wheel, E, meshes, which wheel is keyed or otherwise fastened to a. shaft, E, to the opposite end of which is secured a beveled gear, E, and, as shown, the shaft E is mounted in a journalbox, E, on the cross-piece A.

Fis a sliding clutch located between two beveled gears, FF", both of which mesh with the beveled gear E, which gears are loose upon the driving-shaft, to which the clutch F is connected by a spline, so as to rotatd, with the shaft and at the same time have a free end movement, and, as shown, this clutch Fis operated through a lever -or rod, F, and the clutch at one end has a tooth, e. to engage with a t00th,f, on the hub of the gear F, and its other end has a tooth, e, to engage a looth,f, on the hub of the wheel F", and the clutch is of such length in relation to the space between the hubs of the wheels F F that it can be set midway between the two and stop the rotation of the wheels, or be thrown into engagement with either gear to rotate them, and through the gear E, shaft E", and gear-wheels E E drive the shaft b" to rotate the gear B" andimpart rotation to the cogged ring B in either direction.

G is a shaft on which is mounted the clutch F and beveled gear F F, which shaft at one end is provided with a gear, G, which meshes wit-h a gear, G, on the end of a shaft, G, supported in suitable boxes, G, on uprights G, on which shaft G, as shown, is mounted the loose winding-drum. This shaft G can be driven by steam or other power through a belt, or by a tumbling-rod or other device operated by some motivepower. As shown, it is driven by a belt. g

H is the winding-drum loosely mounted on the shaft G, exceptwhen connected therewith through the clutch device, on which drum the operating rope or cable H winds and unwinds, and this drum, as shown, has at one end a flange, h, and at the other-end flanges h h,, between which and around the end of the drum is a brakeband, and the end of this .drum H adjacent to the clutch is provided with acatch or projection for engagement with a catch or projection on the clutch.

I I is a head firmlysecured to the shaft G by means of setscrews or bolts a, or in any other suitable manner. This head has aside exten- 'sion, 1, in which is located a sliding bar or latch, l, the end-i of which, when projected, engages a projection, g, on the drum, connecting the drum with the shaft G, and the other end of this latch isprovided with a hook, i", for withdrawing the latch to have the end 1" clear the projection g and allow the drum H to run loose back ward,orin a reverse direction from the rotation of the shaft. Asshown, the latch'is thrown forward or into engaging positionbyaspring,l',locatedbelwecnashoulder, 1, on the latch, and a block, I, inserted in the end of the opening for the latch or holtI", and held in place by a screw or bolt, 1, as shown in Figs. 7 and 8.

J represents pieces of rubber or other clas tic material inserted in recesses. J, formed in the extension I at opposite corners, as shown in Fig. 9, to have the face of the rubber come in contact with the faces of the sliding latch or do I" and the amount of ressure or re saasae I 3 sistancev of the bumpers J is controlled, as 'shownfhy set-screws or bolts j, which pass through to have their ends engage the face at the bumper, and, as shown, between the head 5 of the screw or bolt and the facc'ot' the extension is a'serics of washers, j, to regulate the distance the end of the screw projects.' These bumpers J are for the purpose of receiving the shoclt when thedru m is engaged by the clutch l0 and prevent the transmission of the shock to the drum or to the clutch.

ii is a disk, the faceoi' which when the clutch is in positionlto lock and unlock the drum lies adjacent to the end thee of the head Land the periphery of which comes within the space between the end-face ofthe extension I and the hook'iof thclatch or dog 1", and on the inner faceof thisdislr at the periphery is an incline, k,which as the head rotates brings sci-the hook i" into contact with the incline kand withdraws-thedog or latch 1" to release the drum and allow it to run looseiu a reversedi- .rection.

eter is one that fits within the space between the extension and the book i and the circle described by thcdogor catch in its rotation,

1 and the incline on cam k is sutiicicnt; to withdraw the latch or dog I the distancerequired for its end t" toelear the projection you the drum. This disk is formed with or suitably secured to a hub or center, K, on which is also formed or firmly secured a circular plate, K, the periphery of which is pr'ovided with a ,se'ries ol'notches, k, and the end of the sleeve 5 or hub K beyond the face'ofthe plate K is I provided witlr a flange, it, over which fits a notch, k, in the end of avlever, K, pivotally I mounted on a support, K, secured to the upright or post G This lever K"-enables the operator to withdraw the hub or sleeve K and the cam-disk K to withdraw the latch 1,

so that itsend will be held clear from engage ment with the projectiqng, allowingthedrunr H to run loose in a reverse direction to the rotation of the shaft E for anylength of time desired, or until the rope H is completely un wound, for which purpose the sleeve or hub K is loose upon the shaft G ,.so that it can I be moved forward and'back thereon by the 50 lever K, which lever-also advances the hub or sleeve to bring the'carn diskK into it norenal position for nse,in locking and unlocking the latclr,.l'with the drum. The camdisk K is held stationary by a latch, K the end of whiehenters a recess, 1:", on the plate K". This latch IQ is pivoted bya bolt or pi'n k, to a cross piece, G, running from upright to upright G and, as shown, a pin, k,

passes through the body .of the latch K and enters holes k in thecross-piece G, by which thc latch can beheld in engagement with the notch-k", or be carried to one side and locked and held out 'of engagement. This notch-ed plate K also furnishes the means for adjusting the cam-disk in .its relation to the rotation of thell iead' I tonnlock the clutch from the drum at'sn'y requiredpoint to increase or decrease Thewidth of the disk and its diarnthe wind and unwind of therope or cable H on the drum." The rotation of the notched plate forward, or in the direction of the rotation of the shaft G, increases the wind of the rope onto the drum by bringlngthc end i" and stop 9 into engagement before the drum has discharged the full amount of the wiudpro:

viously made, which .engagen'ieht rotates the 7 5 I drum H,with the shaft G windlngthcrope or' cable thereon,.uutil thelatch or dog lis w'ithdrawn by the cam-disk releasing the stops e" g, to allow the drum to run loosein the reverse direction; and as the point of release has i been advanced inrelationto the point where the prior disengagement occu'rred,"it'w ll be seen that an'increase in the wind must be had equal to thedistauce of rotation of the drum over that which it previously had.' The de ss crease in the windis bad by turning. thei notched plate back, or against the rotation of the shaftG, which bringsthe end i of thelatch or dog 1 into engagement with the'stop g at apoint hack of the one. previously had, which been receded, there being that decrease in the rotation of the drum when the disengagement takes place. This arrangement can be used for any purpose where the rotation and release of the drum are desired automatically at stated intervals, to wind thereon and to unwindtherefrom, and by its use an increase or 1 decrease in the' wind is produced by simply changing the position of the cam in relation to the 'former point ot release. The drum can be made to wind without tripping at each revolution of the shaft by releasing the plate K from its holding-latch Kflwhich leaves the earn-disk free, so that as the hook i strikes the base of the incline k the cam-disk will rotate with the head continuously without pro-. dncing a withdrawal of thelatch or dog 1 to release the drunn'and the drum can be left free to run \baekward by withdrawing the latch or dog'l t'rom engagement with thestop 9 through the lever K, which withdraws hub or sleeve K and the cam disk K. a

L is a brake-burnt encircling the drum H. on its upper traveling surface, the band lying within the space between the flauges'hand h". This band atone end isvtirmly secured; as shown, to a plate, Z, attached to a cross-bar, G", and its other end is attached toa loop, I, f on a lever, L, which lever is pivotally at- 'tached between ears to the plate-Z, audits free end has mounted thereon, so as to be adjustablepl'orward' and back, a weight, L. r. The drum can be held stationary at any desired pointin its rotation by withdrawing the latch or dog I from engagement and applying the brake-band L through the lever L, the operator bearing down on the lever with the arrangement shown, and by mean'spf the weight L the speed of the drum in unwinding can be regulated to suit theamount of blow when the apparatnsis used for driving 'or other similar purposes, to do which the weight L is adjusted forward, releasing the pressure which it naturally has on the brake-band, allowing the drum to increase its speed and produce a heavier blow, a lighter blow being produced by moving the weight backward, increasing the pressure'of the brake-band on the surface of the drum and checking ,its speed.

M represents the rim or tire of a wheel, the spokes M of which, as shown, are curved, with their'upper ends riveted or otherwise firmly secured in the rim M, and their inner ends inserted in the periphery of a ring or center, M, which ring or center M is pro vided with a series of transverse openings, m,

to receive each a rubber slecve or packing, mf,

each having a hole, or", for the passage of the stern ofa bolt,'m". This ring is located loose around a circular projection or hub, M, extending, out from the center of an annular plate, M, itsouterend, as shown, being formed sexagonal to receive an annular plate,'M, corresponding-to the plate M, and the ring M lies between the plates M M, around the hub M, as shown in Fig. 11. The plates M M are provided with a series of holes corresponding in number to the number of holes at in the ring M", through which holes and through the holes m"-in the packing m the bolts m are passed and ,drawnjp by nuts in. The plates M M. and hub M have a central opening for the passage of the shaft G, and the plates are locked to the shall; by a key, in, or in any other secure manner, so as to rotate the plates with the shaft. The ring M" being free from the collar or hub M and being held in posi tion in a yielding manner by the sleeves m around the bolts m, it will be seen that this ring M" can yield or give to receive the effects ota shock or partial stoppage of the shaft G, allowing the rim M and spokes M to be unaffected to an extent to cause injury, thus preventing the transmission of any shock to the working parts to an extent to produce injurious eti'ects.

The shaft G, when the drum is running loose, will have an increased speed, which speed, as the drum is caught by the rotating head, will be checked, causing a recoil on the shaft if not overcome; but this recoil is pre-,

vented to an extent that will not causeinjurions etlects by the cushioning-wheel constructed as described, as the increased mo mentuln or speed of the shaft as caught by the engage ent of the drum is transmitted to the plates ll M of the wheel-hub and carried to' the cushioningsleeves maround the bolts m", and thereby is not transmitted to the hub it self nor to the rim and spokes, the force passing to the cushioningslecvcs.

N represents the belt passing around the ceases shaft G, the belt being (1 yen from an engine or other motive power.

Fig. 13 shows the devices in use for sinking a well, and Figs. 14, 15, 16, and 17 show the sinking-tools; and in these figures O relate-1 sents the side pieces of aderrick, the lower ends of which, as shown, rest upon the cross-- bar G and are secured to the uprights t3", and, as shown, the side pieces have cross-slats 0 to form a ladder. At the upper end of the side' pieces, 0, is a cross-rod, o, to which the upper end of the remaining pieces 0' of the den rick are attached. v

P is a pulley-block hungto the rod 0 and which the rope H of the drum runs.

Q is a swivel-eye to which the end of the rope H is secured, the bolt or pivot q of the swivel-eye entering a coupling, r, on the end of the drill-rod.

It is a hollow drill rod carrying at ,its lower end a drill-head, R, in which, asshown, e'xpansible blades or cutters R" are pivoted. This rod is made up of sections secured together by suitable couplings, r, and any ordinary drill-head and drill may beattached'to the lower end of the rod.

S represents the tubing or pipe to be sunk, which pipe may be made up of sections 'connected by suitable couplings, S, and, as shown in Fig. 14, the lower end of this pipe is provided with a cutter, S, (shown in Fig. 15,) having a serrated cutting-edge, s, and its exterior face has a worm, s, thereon, todraw the pipe down. This pipe is clamped between the jaws of the turning table B, so as to be rotated: by the turning of the table, and where the'nature of the soil will permit the tube-itself is made to out its own hole by-the cutter S, in which case the drillrod and drill are dispensed with.

T is a chamber attached to the upper end of the tube S, and, as shown in Fig. 14, a stufiingbox, T, is screwed into the end of thechamber for the passage of the drill-rod.

U is a valve having a plug, u, to open and close it, aud connccted to an extension or coupling, t, on the side of the chamber T, to which valve is attached the end of a. hose or pipe, U, by which water can be supplied to the hole' or withdrawn therefrom through a suitable pump or other supply. (N'bt shown.)

- V is a chamber located around the drillrod- R, having communication with such rod. andhaving its end closed by suitable stufllnghoxes V, through which the rod R passes. This chamber at one side has a conpltn v, to which is attached one end of a hose, means of which water can be supplied to the chamber and drill-rod or be drawn from the hole through the drill-rod and chamber, as

drill-rod at the end of the lower stutiingbon rimMot the cushioningheel for driving the i so having, as shown, two wheels,'p, over one of may be desired, and, as shown, around the ing of the drill'rod is continued until the well .is dropped in use.

ceases I 5 oil-the chamber is a bumper or cushion, u'-,,to take the efiect of the blow when the drill-rod W is'aclamp made of two pieccsand'adapted to titaz'ound the drill-rod and be firmly clamped thereon by snitablebolts, 10,-and receiving in its outer end a rod, W, which engages with an arm, W", extending out from theichamber fT, by which devices the rotation of the tube S is imparted to the drill-rod R. X 1s-.a driving-head (see Fig. 13) around the drill-rod above the chamber T, to receive the blow of a driving-block or hammer when reqmred to force the tube S down.

Y 1s a driving-block having a slot to receive the drill-rod R, and attached to the end of a rope, Y, which extends up and cverthe other wheel, 11, of the pulley P, and thence, down to the platform, by means of which rope the block can be raised and dropped on thedrillrod to strike the driving-head X and i'or'ce the tubes down. i Y Z is a shalt mounted in suitable hearings on the side pieces, A, of the frame and having thereon a spool, Z, for the rope Y.

The operation in sinking a well is as follows: The tube S to be sunk is clamped between the serrated cones I)" and the table, and the ring B rotated, and the driving-gear B", as hereinbeiore described, carrying around the clamping-jaws and the tube 8, causing the cutter S" to perform its work, and where the resistance is not too great the tube will be drawn down by the screw 8, and during this operation, where the tube is made to do its own cutting, the drill is left idle andi'the windingdrum is disengaged from its clutch .and' operating mechanism by throwing the clutch back, as hereinbcfore described. The drill is brought into use when-the material being passed through is too hard for the pipe S'to do its own cutting, and for this purpose the clamp W is connected, t-hronghthe rod W, with the arm W, to have the tube, as it is rotated by the turning table, rotatethe drillrod, and the drill-rod is raised and dropped, through themedium of the winding-drum H and rope H, at each revolution of the dr'nm by throwing the clutch into on agement in the manner before described, ant such workis sunk.

serrated edges,

rotate the pipe, and at the same time the grip is one which will allow the sliding of the p g: throuah the cones. and these cones canpreventiug injurious effects. from the engagestantiallyas and for the grip the pipe with sufiicient tightness to cause the rotation of the table to used in connection with the rotating table for anypurpose where it is desired to turn a pipe or other article or device, and at the sanie time not prevent a free advance or withdrawal of the article through the holding-cones. v

' I am aware that in a well-drilling appara-' tus a loosely-mounted winding-drum has heretoiore been combined with a clutch mechau anism comprising a sliding latch for rigidly connecting said drum with the shaft on which it is mounted; but thisI do not broadly claim.

What I claim "as new, and desire to'secure by Letters Patent, is asfollows: 1

1 A rotating ring or'table, B, carrying 8c clamping devices consisting of two arms, each carryingasupporthavingcone-shaped clamps, substantially as and for the purpose specified.

.2. The arms 0 0 0', plates D, cones I), and shafts D',for forming clampingjaws, substantially as and for the purpose specified.

3. The arms 0 C 0", plates D, cones D, and shaits D, in combinationwith drawing. and tightening bolts operating the arms for ciamping-the cones onto the article to be held, sub- 0 v stantially as specified.

" .4. The combinatiomwith a rotating ring, B, Y of the arms ,0 0' C", platesD, cones 1?", shafts D, and tightening-bolts 11, substantially as and for the'purpose specified. A 5. The combinatiop, with pivoted arms, of a plate carrying the'cia'rnping-cones, drawing I bolts, and tighteiiing-u edges for readily opening and closing the arms for clamping purposes, substantiallyasspecified. I

6. A loose winding-451mmprovidedwith a stationary stop, in combination with a rotating head carrying a sliding latch, and acush- 1 ioning devicefor the latclnsubsi liialiy as and for the purpose specified. I I 7. A loose winding-drum provided with a catch or stop, in combination with a rotating head provided with a catch or stop, and a cushioning device for the catch or stop for v ment of the rotating head with thedrum, suhsian'tiallyas s cidcd. 1

8, Thehei. I, having an extension, Kearrying a slidingv latch, 1", cushion J, audcamdisk K, for operating the head as a clutch, subii 5 purpose specified. 9.v The combination 5t a' rotating head; I, having an extensional, latch, 1", bumpers or cushions J, cam-disk K,

stop-plateKfl-and a loosewinding-drum forum engagin and disengaging the rotary head,/ suhstant allyasspe'ciiied.-

' Y 10. The combination, with a power-shaft, oi} a cushioning-wheel consisting of a rin and a yielding ring or center connected with the is; rim by spokes, substantially as and for the purpose specified. 11. The rim M, spokes M, and ring M, in combination with the plate M, cent-er M, plate M, yielding sleeves m, and bolts m-,ior aushioning the shock, substantially as specied. v p

carrying'a sliding 12. A rotary clamp adapted to grasp a round article and rotate with the endwise movement of the article clamped independent of the rowry movement which carries said article around, and having jaws of a circular form provided with sharp anglcs, substantially as ducribed.

13. A rotary clamp havingjaws of a circn- Ear form with sharp angles adapted to grasp a 10 round article to rotate with the endwise mavement of the article independent of the rotary movement which carries said article around, in combination with a rotary ring for carrying said clamp. and gearing for driving said ring, substantially as described.

MATTHEW Tl CHAPMAN. Witnesses:

ALBERT H. ADAMS, HARRY '1 Joxzes. 

